

package com.hazelcast.map.impl.operation;

import com.hazelcast.internal.nio.IOUtil;
import com.hazelcast.internal.serialization.Data;
import com.hazelcast.map.EntryProcessor;
import com.hazelcast.map.impl.MapDataSerializerHook;
import com.hazelcast.nio.ObjectDataInput;
import com.hazelcast.nio.ObjectDataOutput;
import com.hazelcast.spi.impl.operationservice.BackupOperation;

import java.io.IOException;
import java.util.Set;

import static com.hazelcast.internal.util.SetUtil.createLinkedHashSet;
import static com.hazelcast.map.impl.operation.EntryOperator.operator;

public class MultipleEntryBackupOperation extends AbstractMultipleEntryBackupOperation implements BackupOperation {

    private Set<Data> keys;

    public MultipleEntryBackupOperation() {
    }

    public MultipleEntryBackupOperation(String name, Set<Data> keys, EntryProcessor backupProcessor) {
        super(name, backupProcessor);
        this.keys = keys;
    }

    @Override
    protected void runInternal() {
        EntryOperator operator = operator(this, backupProcessor, getPredicate());
        for (Data key : keys) {
            operator.operateOnKey(key).doPostOperateOps();
        }
    }

    @Override
    protected void readInternal(ObjectDataInput in) throws IOException {
        super.readInternal(in);
        backupProcessor = callWithNamespaceAwareness(in::readObject);
        int size = in.readInt();
        keys = createLinkedHashSet(size);
        for (int i = 0; i < size; i++) {
            Data key = IOUtil.readData(in);
            keys.add(key);
        }
    }

    @Override
    protected void writeInternal(ObjectDataOutput out) throws IOException {
        super.writeInternal(out);
        out.writeObject(backupProcessor);
        out.writeInt(keys.size());
        for (Data key : keys) {
            IOUtil.writeData(out, key);
        }
    }

    @Override
    public Object getResponse() {
        return true;
    }

    @Override
    public int getClassId() {
        return MapDataSerializerHook.MULTIPLE_ENTRY_BACKUP;
    }
}
